Silo.



TE STATES AnBnR'r r. srnARNs, or BOSTON STEARNS, EDXVARD S. TENNY,

l AND JAMES OF SAlD ALBERT T. STEARNS,

, MASSACHUSETTS; FREDERCK M. F. DUNBAR, TRUSIES DECEASED, ASSIGNORS TO THE A. T. STEARNS LMBER COMPANY, .OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

' SILQ.

Speccation of Letters Patent.

Patented Sept. 4, QCS,

Application filed Ml'll l0, 1904. Serial N0. 197,496,

drawings, is e specificati on j like characters on the drawings representing like parts'.

Heretofore silos having wooden exterior wells have been mede open et one side from end to end end provided with a. series ot' nievable doors arranged one shove the otherI the edges of the exterior well et opposite sides the opening being braced together'.

My no'vel silo comprises en exterior well having a )tissage-way lending from neer the upper to the lower end thereoic through whieh fthe ensihtge may be disrhnrged from the silo, the ua-ssage-Wey being so constructed as to be gradually shortened in length es the depth ol ensilage is decreased.

To shorten the passage-way' in one of the best forms now known to ino, l have ine-de the woll thereof in sections, so that one sertion after another nitty be removed ns the depth of the ensilege decreases.

The assngewoy is shown ns having footholds t nrt may be used e bidder, so that o. person muy enter the passage-way at the bottoni'of the silo end eliinb up through said passageway to zget onto the top of the ensi` lage contained in the silo.

Figure l in vertical section shows o. silo enibodying rny invention in one olY the best forms now known Ato ine. Fig. 2 is e crossseetion of the silo on the line x, Fig. l. Fig. 3 is a detail showing e looking device to retain a. section of the passage-wey in its looked position. Fig. 4 shows u. modification of 'my invention in which the passage-wey is located close to the outer woll o1e the silo, and Fig. 5 is a mrtiel eross-seetion thereof" in the line x.

The outer well A of the silo of any desired height and ot any desired shape end aree in cross-seetion-soy from eight to sixteen feet aerosshrnny be made of wood or timber embraced by strong hoops A', capable of being drawn Very closely about the well to hold the timbers thereof in place.

The silo shown has it eiroulnr exterior wall;

but it will be obvious that the shape of the exterior well is innneteriul.

The upper end of the silo shown lui-"- ing e rootl B, eonuirising slenting beams b, united in any usual wey.

The silo muy be ero d on it foundation l', of stone or briel: or ny ineteriel, seid foundation hir-ring; en openinfT in which muy be run o.. ringen or any that is to receive the ensiluge l'roni the silo es it 'is to be i'ed to stock.

which in cese the ensilnge is to be .ielivered through thi` bott-ern A2 oi the silo is exlendeifl upwardly fron; said bottoni to u; point about level with the ensiloge in the silo. it beingY supposed that the ensilitge when the silo is illed will corne about to the dotted iine y.

The passage-wey C is shown ns compos Ad ol :t series of short see ably, tongues und groin/es to aid in retainingr the didi-)rent sections in platee one on the other.

The upper end ot' the passage-.wey may and preferably will here a. eover C', the letter fitting over und Closing the open upper end of the passage-mty zitter iilling the silo, seid cover remaining in position usually until the eusilnge is to be teken from the silo.

When the silo is to be opened, of course the over C will be .raised into the dotteddine position and will remain there, and the soctions c will be ririsedon the guides es re( uired es the depth of the ensilege varies, and they will be locked in their elevated position.

The @over is shown as slidnble on guide rods or ways CZ, represented as suspended from o. eross-beein al of the roof, seid rods lof-Bing` extended through the mssege-way to the bottoni of the silo, where the rods are held by any suitable ineens.

Each section c ot the pessege-wzty also has one or more locking devices, represented es bolts haring eyes o2 to embrace seid guiderod, and a nut c, rotatable on e threaded part of the bolt, so that by turning the nut the clamping device may be drawn to cause the eye thereof to bind the rod so closely es to hold each section of the passage-way either in its operan/ive position or its inoperative posit-ion as said section is eleyeted us the ensitions c, having, prelor- IOO t de th of ensilage in the silo.

' thrown into the iplpassage-way bottom thereofI .the top the passage-way,

ithin the passage-way I su port in suit- 'able manner a series of footholds e, shown as iron rods and serving as steps or rungs,

a ladder.'

A person may enter the passage-way yat its lower end and engaging the rungs may climbY therethrough to the upper end thereof, pushing up the cover and stepping out onthe en.- silage in' the silo preparatory to attacking the ensilage with a shovel or fork to discharge the same from the silo through the passageway.

The ensilage7 at the top of the silo may be and fall to the om which point it may be taken and fed to stock.

As the ensilage is fed out and the depth of the mass is decreased and the sections c are lifted one after the other it will be understood that the outlet for the ensilage, which is will always be in suchpos tion as to handle the ensilage with the least 'amount of labor.

In Fig. 4, showing a modication of my invention, Ythe passage-wayf is located close to the exterior wall F of the silo; said wall constitutinor a portion of the passage-way. The Wall of t e silo when the passage-wayfis used will have a door f at its lower end. The inf3, below which 'is anot ner wallf2 of the passageway f has a series of movable sections 2 made as doors, one located above the other, the lowermost of said doors being sustained b f a platform or plank er door g, that may be removed prior to removing the last of the ensilage from the silo. When it is desired to use the passage-way f, moved and the person who is to'discharge the ensilage will enter the passage-Wayf and put# ting his foot on the rungs S'Will climb through l as of the door f Will-be rethe passage-way to the top of the ensilage and immediately commence to detach theensilag and throw it into said passage-way to the ottom thereof, from which point it will be removed by a shovel or other usual means. As the depth of the ensilage decreases one section or door 2 afteranother is lifted and held up out of thel way by suitable locking devices 10, such as described, which may coact with suitable rods 12. Finally' the door g will he opened and the ensilage at-the bottom of the.silo may be pushed out through the door f Having described my invention, what Iv claim, and desire to secure by Letters Patent, 1S

1. A silo having a sectional 'assage-way for the reception at its u per en of .the ens1 lage, said, passage-way i) throu h the bottom thereof.

2. silo having a sectional passage-way for the reception at its upper end ofthe ensi lage, said'passage-way leadin the ensilage to the lower end of the silo, an guides for the sections comprising said passage-way..

3. A silo having a sectional passage-way! for the discharge therethrough of ensilage, and vmeans to lock the sections ofthe passage-way in their elevated inoperative osif tions one passage-way is shortened to accommodate the decreasing thickness of ensilage.

4.` A silo having a tube-like sectional passage-way leading rom the bottom of the silo through the ensilage therein, and guides to control the movement of said sections.

In testimony whereof I have'signed my name to this specilieation in the presence of l two subscribing Witnesses.

ALBERT T. STEARNS.

Witnesses:

GEO. W. GREGORY, FRANCIS S. LORD.

eading the ensilage after the other as the length o the 

